What's the most encouraging/refreshing/enlightening phrase/song you can remember?

What's the most encouraging/refreshing/enlightening phrase/song you can remember?

"When he saw the crowds he went up into the mountain; and after he sat down his disciples came to him; and he opened his mouth and began teaching them, saying:3 “Happy are those conscious of their spiritual need, since the kingdom of the heavens belongs to them.4 “Happy are those who mourn, since they will be comforted.5 “Happy are the mild-tempered ones, since they will inherit the earth.6 “Happy are those hungering and thirsting for righteousness, since they will be filled.7 “Happy are the merciful, since they will be shown mercy.8 “Happy are the pure in heart, since they will see God.9 “Happy are the peaceable, since they will be called ‘sons of God.’10 “Happy are those who have been persecuted for righteousness’ sake, since the kingdom of the heavens belongs to them.11 “Happy are YOU when people reproach YOU and persecute YOU and lyingly say every sort of wicked thing against YOU for my sake. 12 Rejoice and leap for joy, since YOUR reward is great in the heavens; for in that way they persecuted the prophets prior to YOU." Mt5:1